Evaluation of immediate implant in patients with limited buccal bone wall dehiscence in single upper anterior tooth
10.3760/cma.j.cn112144-20200615-00348
- VernacularTitle:单颗上前牙唇侧骨壁部分缺损即刻种植效果的前瞻性研究
- Author:
Xiaoxin ZHANG
1
;
Xinyu WU
;
Ting XIA
;
Shi FENG
;
Qing HU
;
Qi YAN
;
Bin SHI
Author Information
1. 武汉大学口腔医学院种植科 430079
- Keywords:
Dental implantation;
Alveolar bone loss;
Esthetics, dental;
Prospective studies;
Immediate implant
- From:
Chinese Journal of Stomatology
2020;55(11):831-837
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare and evaluate the clinical outcome of immediate implant therapy in patients with limited buccal bone wall dehiscence and in patients with intact buccal bone wall.Methods:This prospective cohort study included patients intended to receive immediate implant treatment in upper anterior esthetic region in the Department of Implantology, Hospital of Stomatology, Wuhan University from August to December, 2018. Patients with buccal bone wall dehiscence limited to the coronal half were attributed to experimental group to conduct flap implant surgery (indicating to less than coronal half of the buccal bone wall length from the alveolar bone crest to the implant tip), whereas patients with intact buccal bone wall were attributed to control group to conduct flapless implant surgery. Buccal bone wall resorptions in height and thickness were evaluated 6 months after implant placement. Implant survival rate, pink/white esthetic score and post-operation complications were also analyzed 12 months after implant placement. Paired t-test and two-sample t-test were adopted to analyze the differences of different points within one group and differences between groups, respectively. Results:A total of 38 patients with the age of (39.2±5.8) years (range 19-45 years) and 38 upper anterior single tooth implants were included,in which 19 patients were attributed to experimental group [12 male and 7 female, the age was (37.6±5.3) years], and 19 patients were attributed to control group [9 male and 10 female, the age was (40.8±6.7) years]. Over the 12 months′ observation after implant placement, the overall implant survival rate was 97% (37/38), and 18/19 in control group and 19/19 in experimental group. Only one implant lost in control group and no other complications were reported. Buccal bone resorption in thickness and height occurred in both groups within 6 months after implant placement. The thickness and height of buccal bone decreased significantly in both groups within 6 months after implant placement ( P<0.05). Thickness decreases in experimental group were (1.32±0.74), (0.53±0.89) and (0.36±0.70) mm in coronal, middle and apical part of implant in experimental, and (1.24±0.57), (0.83±0.46) and (0.38±0.72) mm in coronal, middle and apical part of implant in control group. While the buccal bone height decreases were (0.24±0.15) mm in experimental group and (0.25±0.23) mm in control group. There were no statistical differences between the corresponding spots in the two groups ( P>0.05). Upon the final restoration, both group got ideal pink esthetic scores [experimental group (10.92±1.13),control group (10.92±1.26)] and white esthetic scores [experimental group (7.61±0.78), control group (7.40±0.71)], the differences in both groups were not statistically significant ( P>0.05). Conclusions:Clinical results of immediate implant to patients with buccal bone wall dehiscence limited to the coronal half are comparable to the results of patients with intact buccal bone wall.
